net.sf.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: 3, of class: com.opensymphony.user.provider.hibernate.entity.HibernateUser

net.sf.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: 3, of class: com.opensymphony.user.provider.hibernate.entity.HibernateUser